Title
Exploiting Depth Discontinuities for Vision-Based Fingerspelling Recognition
Abstract
We present a novel method for automatic fingerspelling recognition which is able to discriminate complex hand configurations with high amounts of finger occlusions. Such a scenario, while common in most fingerspelling alphabets, presents a challenge for vision methods due to the low intensity variation along important shape edges in the hand image. Our approach is based on a simple and cheap modification of the capture setup: a multi-flash camera is used with flashes strategically positioned to cast shadows along depth discontinuities in the scene, allowing efficient and accurate hand shape extraction. We then use a shift and scale invariant shape descriptor for fingerspelling recognition, demonstrating great improvement over methods that rely on features acquired by traditional edge detection and segmentation algorithms.
Year
DOI
Venue
2004
10.1109/CVPR.2004.336
CVPR Workshops
Field
DocType
Volume
Computer vision,Classification of discontinuities,Scale invariance,Pattern recognition,Edge detection,Computer science,Segmentation,Vision based,Artificial intelligence,Fingerspelling,Hidden Markov model,Vocabulary
Conference
2004
Issue
ISBN
Citations 
1
0-7695-2158-4
23
PageRank 
References 
Authors
1.27
15
5
Name
Order
Citations
PageRank
Rogério Feris1152989.95
Matthew Turk23724499.42
Ramesh Raskar35305422.69
Kar-han Tan462243.39
Gosuke Ohashi5397.32